WalletHub, Financial Company
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You should be able to transfer a friend's balance to the Chase Slate, given that transferring a balance typically just entails providing the issuer of the recipient card with the balance's account number so that it can be paid off. Issuers don't generally ask about your relationship with the owner of the account that has the existing balance.
That said, if you perform this type of transaction, you'll be taking on a lot of additional risk. You will become legally liable for repaying the amount your friend currently owes. And it could damage your credit standing, not only if you miss payments due to the additional debt burden, but also because your credit utilization will increase. You can learn more about balance transfers from this guide.
You can track your credit score from day to day for free on WalletHub, too. Finally, if you ultimately decide to move forward with the transfer, we recommend double-checking with Chase whether a friend-to-friend balance transfer is allowed. Because it's definitely not standard operating procedure. You can reach their customer service department here: 800-432-3117.
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